What is the purpose of shirley Yang's sudden appearance in Longling Cave?

In the play, Professor Chen is not in Longling, but Professor Sun, who is always in Longling and has a close relationship with Professor Chen. But the encounter between Yang Ping and Hu Bayi in the play is really accidental. The allusions of Longling Cave came into being after Jingjue Ancient City. The four survivors of Jingjue Ancient City are Professor Wang Pangzi, Professor Chen.

In the ancient city of Jingjue, they noticed a prophetic book left by the priest. It is said that one of the survivors who arrived in the ancient city of Jingjue many years later was a descendant of Zagrama. After Yang Ping returned to the United States, she read the diary of her grandfather's partridge whistle and learned that she was Zagrama. In that diary, she also recorded that their Hakka people were cursed by the ghost cave and got a genetic disease, which had to be wiped out by the dust beads.

So, I made full preparations for my eye-like rash, but I was surprised to find that Professor Chen also had that kind of rash on his hand, which was somewhat different. According to the description of partridge whistle, it seems that the illness of Zaghla centaurs has been passed down from generation to generation, and it seems that it is only related to their people.

However, Professor Chen is not Zagrama, but after he came back from the ghost hole, such marks appeared on his hands. According to this situation, Yang Ping remembered that the curse of the Hakkas might not be purely genetic, but was caused by radiation source or virus infection in the ghost cave. Anyone who has come into contact with a ghost hole may suffer from this disease.

Hu Bayi and Wang Pangzi also got up together to visit the ancient city of Gyeonggi. Not at ease, I hurried to find Professor Sun who knew ancient Chinese characters and helped them find dust beads to eliminate symptoms. In the original work, Professor Sun came to Gulan County for a period of time every year to conduct archaeological research. When I came to Gulan, I became a little assistant to Professor Sun and went to Longling to do research with him. Unexpectedly, after living in the same village with Professor Sun, Wang Pangzi and he, who had a narrow escape, also came to the same village to take refuge, and the three met unexpectedly. In the original book, after learning the truth about Zagrama in the United States, Yang Ping traveled thousands of miles back to Beijing to find Hu Bayi who returned from Longling, and then got a series of stories. However, whether it is a script or a book version, the purpose of Yang Ping's return to China is to deal with the terrible curse of the ghost hole and look for dust beads to remove the rash. In order to survive better, Hu Bayi and Wang Pangzi joined hands with Yang Ping and embarked on a pearl-seeking expedition. From then on, the inverted iron triangle was proclaimed, and all three were inherited by Jin Zhongmi. After that, Big Gold Teeth seldom went to the grave.